.dirTree::-moz-tree-image(closed) {
  list-style-image: url("chrome://chromelist/skin/icons/folders.png");
  margin-right: 2px;
  -moz-image-region: rect(0px 16px 16px 0px);
}

.fileTree::-moz-tree-image(isFolder) {
  list-style-image: url("chrome://chromelist/skin/icons/folders.png");
  margin-right: 2px;
  -moz-image-region: rect(0px 16px 16px 0px);
}

.dirTree::-moz-tree-image(open) {
  list-style-image: url("chrome://chromelist/skin/icons/folders.png");
  -moz-image-region: rect(0px 32px 16px 16px);
  margin-right: 2px;
}

.fileTree::-moz-tree-image
{
  margin-right: 2px;
}
